Rough Country 1068 Rough Country-1068-Throttle Body Spacer for Select Years: Jeep Cherokee XJ, Comanche MJ, Grand Cherokee WJ, Grand Cherokee ZJ, Wrangler TJ 4WD Easy bolt-on installation.; improved torque performance.; increased fuel economy. Only fits models with 4.0L/ 2.5L engines.; only fits 4-bolt throttle Bodies.; not for use in California pending air Resource board exemption 1997-2006 4WD Jeep TJ Wrangler; 2004-2006 4WD Jeep TJ Wrangler Unlimited; 1987-1995 4WD Jeep YJ Wrangler; 1984-2001 4WD/2WD Jeep XJ Cherokee; 1986-1993 4WD/2WD Jeep MJ Comanche; 4.0L/ 2.5L engines Kit contents: throttle body spacer; gaskets; linkage Spacers; hardware Est. Install time: 1-2 hours; sku: 1068